Home / 20,917.56-31,375.62-9,818.04

Finding the Fourth Proportional to 20,917.56, 31,375.62 and 9,818.04

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Solution

The fourth proportional to 20,917.56, 31,375.62 and 9,818.04 is: 14,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.56 : 31,375.62 = 9,818.04 : x
  2. Step 2: Convert to fraction form
    20,917.56/31,375.62 = 9,818.04/x
  3. Step 3: Cross multiply
    20,917.56x = 31,375.62 × 9,818.04
  4. Step 4: Simplify right side
    20,917.56x = 308,047,092.18
  5. Step 5: Solve for x
    x = 308,047,092.18/20,917.56
  6. Step 6: Final answer
    x = 14,726.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.